Fire-polishing apparatus.



M. A. SMITH. FIRE POLISHING APPARATUS.

APPLICATION TILED AUG. I7. 1916- RENEWED JUNE 17. I918.

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N E STATES PATENT OFFICE. f

name A; MITH, OF emanates, PENNSYLVANIA.

x 'FIRE POLI'SHI'N APP-ARATUSIQ s ecification qt Least Patent? Aplication mea'xu m 17, 1916, Serial No. 115',41a-.-Renewea June-17; 11a. -Seria1No. 240,5 23.-"

To all wkomit may concern:

Beit known that-I, MAURICE A. SMrrH, a citizen of the United States, andresident of Jeannette, in' the county of Westmoreland and State ofPennsylvaniayhave invented a new and useful Improvement in Fire-Pol.-ishing Apparatus; and-I do hereby declare the following to be a full,clear, and exact description thereof.

My invention relates to fire-polishing apparatus;

My invention -relates more particularly to that type of -fire po'lishing.apparatus inwhich'airand gas-are delivered to' a burner, the combustionchamber being; soshaped as to direct the flame downwardly so as'tofirepolish theinterior or exteriorof anarticle on theprincipleof'the-Qwens' Patent No. 628,027, July.4-, 1899, whereby apressed cutglass blank is fire-polished upon. the interior to remove anydefects or' imperfections caused by the action of the-plunger inpressing the glass in the mold.

The object of-myinvention is'to provide a simple form of apparatus bywhich thear ticle to be polished is quickly brought into position forpolishing, and withdrawn therefrom and lifted from the support whichholds it during the polishing operation, so that it may be convenientlyremoved therefrom.

In the accompanying drawing, Figure 1 is a plan view of my improvedapparatus; Fig. 2 is a longitudinal section; Fig. 3 is a view of aportion of the apparatus where the article is supported in position tobe polished on the exterior.

Referring to the drawing, the numeral 2 designates a suitable table orplatform mounted on a frame 3, which in turn is preferably mounted onwheels 4 for convenience in transporting the device from one part of thefactory to another.

A burner 5 of well-known construction is supported on the adjustablebracket '3 carried by the table 2. This bracket is secured to theslidable member 7 which telescopes with and is'adapted to move up anddown on the post 8. The adjusting screw 9 is adapted to raise andlowerthe member 7 to bring the burner to the desired height according to thearticle to be operated on.

Air is supplied from the tank 10 located below the table in the .frame3, said air being conducted by the pipe 11 to the burner where it ismixed with the gas introduced by the pipe- 12. The' construction oftheburner 5 is such that the air'and. gaswhen ignited in the combustion.chamber, form a hot flame which is directed downwardly and confinedwithin a comparatively small area. Resting upon the table 2 are theformers 13 and 14, the-former 13 being concave in form to receivecorrespondingly shaped arhole and the former14 is convex so as to re'-'ceive the articlewhen inverted for the purpose fully hereinafter setforth.

Theformers 13 and 14 haveeacha valveconnected to said frods by the links'20. The upper ends of the rods extend through open ing's-21 in thetable-and said? rods are provided' with the collars 22"which rest on theshoulders 23 formed inthe table; p ro-iection 24 on the, upper end ofthe rod enters a recess 25 forinedfin the valve l5when the rod'and saidvalve are brought 1nto reglster with each other.

The formers 13 and 14 are provided with suitable handles 26 for movingsaid formers on the table.

The article to be fire-polished, which for illustration may be the bowl27, after having been pressed and removed from the mold, is moved alongthe table in position to bring it under the burner 5. The hot blast isdirected from the burner onto the interior of the bowl, while supportedin the former and the fire-polishing action takes place. \Vhen this iscompleted, the operator moves the former 13 back along the table untilthe valve 15 is brought into register with the lifting rod 16 whereuponthe operator-moves the lever 18 to lift the rod 16, and the upper end ofsaid rod engaging said valve is lifted together with the bowl supportedthereon to the position indicated in dotted lines Fig. 2. In this mannerthe bowl is quickly removed from the former and elevated in position forlifting and transferring to the former 14, where the exterior of thearticle is to be fire-polished, the bowl being inverted and supported onthe frame 14 in the manner indicated in full lines Fig. 3. The former 14is then moved over into position to be subjected to the action of hotblast, and is then withdrawn and brought into register with the rod 17whereupon by operating the lever 18 the bowl is lifted by the rod to theposition in dicated by dotted lines Fig. 3 to be removed therefrom andtaken to the leer.

By my invention, while one bowl is being fire-polished the other isbeing removed from the former, and in this way one operator can managetwo formers. All he has to do is to move the former under the blast,withdraw it therefrom, and by operating the lifting lever, the articleis lifted from the former in convenient position to be taken away. 1

The movable valve orsection 15 not only provides for the lifting of thearticles from the former, but at the same time opens up a passageway forthe circulation of air through the former, thereby cooling the same andpreventing its overheating.

What I claim is:

1. In fire-polishing apparatus, the combination of a suitable frame, atable, a hot blast device supported above said table, a former carriedby said table and movable thereon, a movable central portion in saidformer, and lifting means detached from and adapted to register withsaid movable portion.

2. In fire-polishing apparatus, the combination of a suitable frame, atable, a hot blast device supported above said table, a

former carried by said table and movable thereon, a movable centralortion in said former, a lifting rod detadlied from and adapted toregister with said movable por tion, and means for raising said rod.

8. In fire-polishing apparatus, the combination of a suitable frame, atable, a hot blast device supported above said table, a former carriedby said table and movable thereon, a movable central portion in saidformer, a lifting rod passing up through an opening in said tabledetached from and adapted to register with said movable portion, andmeans for lifting said rod.

4. In a fire-polishing apparatus, the combination of a suitable frame, atable, a hot blast device supported above said table, a former carriedby said table and movable thereon, a movable central portion in saidformer, a lifting rod extending up through an opening in said table andnormally be low the level of said table, said rod being detached fromand adapted to register with said movable portion, and means for liftingsaid rod. 7

In testimony whereof I, the said MAURICE A. SMITH, have hereunto set myhand.

I MAURICE A. SMITH. Witnesses:

I. BEULCKE, E. B. STERN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

